Air purifier



FIG. 1 is a front perspective view of an air purifier showing our newdesign;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left-side view thereof;

FIG. 5 is a right-side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof;

FIG. 8 is an enlarged view of the encircled portion 8 in FIG. 1;

FIG. 9 is an enlarged view of the encircled portion 9 in FIG. 1; and,

FIG. 10 is an enlarged view of the encircled portion 10 in FIG. 1.

The evenly-dashed broken lines in the figures depict portions of the airpurifier which form no part of the claimed design.

The dot-dot-dash broken lines encircling portions of the claimed designthat are illustrated in enlargements form no part of the claimed design.

CLAIM We claim the ornamental design for an air purifier, as shown anddescribed.